Allow customizing retryable message types in Faulty agent tests (#37450)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/37450
It doesn't seem like we could customize the retryable message types by
passing faulty_messages into dist_utils, as the `FaultyRpcAgentTestFixture`
overrode the `rpc_backend_options` function and provided the default list of
retryable message types. Needed to fix this as part of adding timeout injection
support as mentioned in https://github.com/pytorch/pytorch/issues/36272
ghstack-source-id: 103287164
Test Plan: `buck test mode/dev-nosan //caffe2/test/distributed/rpc/faulty_agent:rpc_spawn_faulty -- --print-passing-details`
Differential Revision: D21270127
fbshipit-source-id: e5dd847dcf92f14b490f84e9ee79291698b85ffa
